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how to buy a pool filter

Author: Poolking - Swimming Pool Equipment Manufacturer

How to Buy a Pool Filter: A Comprehensive Guide

Summertime is the perfect season for spending time in the pool with friends and family. However, maintaining a pool can be a daunting task, especially when it comes to filtering the water. Purchasing the right pool filter is crucial, as it directly affects the water quality and can have an impact on your health. In this article, we will provide you with a comprehensive guide on buying a pool filter, including the different types of pool filters, what to consider when choosing one, and some tips on installation and maintenance.

Type of Pool Filters

The first step in buying a pool filter is to understand the different types of filters available:

1. Sand Filters: These types of filters use sand to trap dirt and debris. Sand filters are the most popular and cost-effective option for most pool owners.

2. Cartridge Filters: These filters operate by trapping dirt, debris, and algae in a cartridge. They are highly efficient at filtering smaller particles and require less maintenance than sand filters.

3. Diatomaceous Earth Filters: These filters use a powder made from fossilized diatoms to filter the water. They are highly effective at cleaning and filtering even the smallest particles of debris.

What to Consider When Choosing a Pool Filter

Once you have an idea of what type of pool filter you want, it’s time to consider other factors before making a final decision:

1. Pool Size: The size of your pool will determine the size of the filter you need. Your pool filter needs to be able to handle the water capacity of your pool, so make sure you know your pool size before purchasing a filter.

2. Budget: Filters can range from several hundred to several thousand dollars. You will want to consider your budget when choosing a pool filter. As a general rule, the more expensive the filter, the more efficient it is.

3. Pool Cleaning Frequency: Depending on how often you plan to clean and maintain your pool, you may want to choose a filter that requires less maintenance. Cartridge filters typically require less cleaning than sand filters.

4. Water Flow Rate: The water flow rate of your filter will determine how quickly the water is pumped through the filter. A higher flow rate is generally better for larger pools.

5. Energy Efficiency: Some filters are more energy-efficient than others. Consider choosing a filter that is more energy-efficient to save money on your energy bill and help reduce your carbon footprint.

Installation and Maintenance

Once you have chosen your pool filter, it’s time to install it. If you are not comfortable installing the filter yourself, it is recommended that you hire a professional to do so. You will also need to maintain your filter to ensure it continues to work effectively.

1. Regular Cleaning: All pool filters require regular cleaning to ensure they work efficiently. Cartridge filters need to be cleaned every few weeks while sand filters should be backwashed monthly.

2. Replace Parts: Over time, various parts of your pool filter may need to be replaced. Follow the manufacturer's recommendations for replacing parts, such as cartridges or filter sand.

3. Winterize Your Pool: If you live in an area with cold winters, it’s important to properly winterize your pool and filter to avoid damage. Consult your filter’s manual on proper winterization procedures.

Conclusion

In conclusion, purchasing a pool filter requires careful consideration of your pool's size, budget, cleaning frequency, and water flow rate. It’s important to choose a filter that is energy-efficient, easy to maintain, and reliable. Once you have installed your filter, make sure to maintain it properly by regularly cleaning and replacing parts as needed. With the right pool filter, you can enjoy a clean and healthy pool all summer long.

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After about 5~10days ,or when the reading of the pressure gauge on the pump side of the filter has increased by about 0.2bars since the last backwash , backwash the filter as follows:
1. Stop the pump
2.Close the valves on the suction and return lines.
3.Open the cover of the pump and empty the filter gasket .
4.Refit the cover
5.Open the valve to the drain outlet
6.Turn the lever to BACKWASH
7. Open the valves to the suction and return lines.
8.Start the pump .Rinse the filter for about 1 to 2 minutes until the water in the sight glass is clear .
NOTE : Any electric heater must be off .
9. Stop the pump
10. Turn the lever to RINSE , start the pump and rinse for about 15~30 seconds. Stop the pump and turn the lever to FILTER . This is the normal operating position .
11. Close the drain outlet valve and start the pump . Switch on the electric heater if any .
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----It is best to replace the silica sand of sand filters every 1-2 years for the following reasons:
a During backwashing, the filtration bed volume will expand upwards by 1.2 to 1.3 times. The water flow will drive the filtration layer to flow up and down, causing the filtration material particles to collide with each other. Backwash will let the small sand evacuate.
b.Some silica sands will be welded when the acid and alkali are changed due to insufficient purity;
Therefore, the longer the time, the worse the filtering effect of the sand tank. Since backwashing will consume and take away some sand, we need to replace the sand in the sand tank within the specified period.
a.Firstly you can tell me the pool size such as wide, length and depth.The circulation period is 4 hours,then we can use the pool volume divide by 4 to know the flow rate.Based on this we can know choose the suitable model for sand filter and pump.
b.Usually 4 meters can install a pool light.Both ends of the pool can install the ladders.
The basic filtration equipment can be chosen like above method.The other accessories can be fixed according to the using environment and requirement.
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----Yes, they can. Silica sand is mainly used for filtration, while activated carbon is mainly used for adsorption. Silica sand is effective for higher water quality requirements. When use them together, silica sand should be placed on the bottom layer, and then activated carbon should be filled on the sand, but the cost of using two media is much higher.
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